Molecular Weight Dependence of Chain Orientation and Optical Constants of Thin Films of the Conjugated Polymer MEH-PPV

2006 ◽  
Vol 39 (25) ◽  
pp. 8692-8698 ◽  
Author(s):  
Kaloian Koynov ◽  
Ayi Bahtiar ◽  
Taek Ahn ◽  
Rodrigo M. Cordeiro ◽  
Hans-Heinrich Hörhold ◽  
...  
Keyword(s):  
Thin Films ◽  
Molecular Weight ◽  
Conjugated Polymer ◽  
Optical Constants ◽  
Chain Orientation ◽  
Molecular Weight Dependence

Molecular weight dependence of birefringence of thin films of the conjugated polymer poly[2-methoxy-5-(2′-ethyl-hexyloxy)-1, 4-phenylenevinylene]

2004 ◽  
Vol 84 (19) ◽  
pp. 3792-3794 ◽  
Author(s):  
Kaloian Koynov ◽  
Ayi Bahtiar ◽  
Taek Ahn ◽  
Christoph Bubeck ◽  
Hans-Heinrich Hörhold
Keyword(s):  
Thin Films ◽  
Molecular Weight ◽  
Conjugated Polymer ◽  
Molecular Weight Dependence

Degradation in a Methyl-phenyl Co-Polymeric Polysilane for LED Applications

2003 ◽  
Vol 769 ◽  
Author(s):  
Asha Sharma ◽  
Deepak ◽  
Monica Katiyar ◽  
Satyendra Kumar ◽  
V. Chandrasekhar ◽  
...  
Keyword(s):  
Thin Films ◽  
Molecular Weight ◽  
Light Source ◽  
Room Temperature ◽  
Light Exposure ◽  
Room Temperature Photoluminescence ◽  
Pl Spectrum ◽  
Pl Intensity ◽  
Methyl Phenyl

AbstractThe optical degradation of polysilane copolymer has been studied in spin cast thin films and solutions using light source of 325 nm wavelength. The room temperature photoluminescence (PL) spectrum of these films show a sharp emission at 368 nm when excited with a source of 325 nm. However, the PL intensity deteriorates with time upon light exposure. Further the causes of this degradation have been examined by characterizing the material for its transmission behaviour and changes occurring in molecular weight as analysed by GPC data.

Endgroup and Sidechain Functionalization of Surface-Initiated ROMP Thin Films: Progress Towards ROMP-Based Molecular Wires

2018 ◽  
Author(s):  
Nicholas Marshall
Keyword(s):  
Thin Films ◽  
Contact Angle ◽  
Cyclic Voltammetry ◽  
Polymer Films ◽  
Conjugated Polymer ◽  
Ring Opening ◽  
Molecular Wires ◽  
Metathesis Polymerization ◽  
Cross Metathesis ◽  
Active Ester

A set of experiments in surface-initiated ring-opening metathesis polymerization, including end-functionalization of growing brushes and contact angle/cyclic voltammetry measurements. We report preparation and CV of two different conjugated polymer films, and several endgroup and sidechain functionalization experiments using cross-metathesis and active ester substitution.<br>

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